Geometrical Researches on the Theory of Parallels
- Author
- Nicholas Lobachevski, George B. Halsted
- Publisher
- Kessinger Publishing, LLC
- Language
- English
- Year
- 2010
- Page
- 64
- ISBN
- 9781161646849,1161646841
- File Type
- djvu
- File Size
- 1.6 MiB
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